Multi-group direct-access crossbar telephone switching system



Oct. 20, 1959 R. wfHuTToN ETAL 2,909,611

MULTI-GROUP DIRECT-ACCESS `CROSSBR TELEPHONE SWITCHING SYSTEM Filed June 5. 1953 29 Sheets-Sheet 1 Oct. 20, 1959 R. w. l-lUT'roN`l ETAL 2,909,611

MULTI-GROUP D1REcT-AccEss cgossBAR TELEPHONE swITcHING SYSTEM Filed' June 5. 1953 29 sheets-snaai 2 MULTI-GROUP DIRECT-ACCESS CROSSBAR TELEPHONE SWITCHING SYSTEM Filed June 5. 1953 R. W. HUTTON ETAL oct. zo, 1959 29 Sheei-s-Sheet 4 mwTm mmOkomJmm Oct. 20, 1959 I R. WQHUTTON ETAL 2,909,611

MULTI-GROUP DIRECT-ACCESS cRossBAR TELEPHONE SWITCHING SYSTEM Oct. 20, 1959 R. w. HUTTON lTrAl. 2,909,611

MULTI-GROUP DIRECT-ACCESS cRossBAR TELEPHONE swITcHING SYSTEM Filed June 5; 1953 29 Sheets-Sheet 6 IOct.' 20, 1959 R. w. HuTfroN Er AL MULTI-GROUP DIRECT-ACCESS CROSSBAR TELEPHONE SWITCHILNG SYSTEM Filed June 5. 1953 29 Sheets-Sheet 7 v omNN oct. ,20, 1959 R. W.v HUTTON ETAL 29 Sheets-Shea?l 9 Filed June 5. 1953 mm: l GUN# NIL. r5` 4 1.. ft m NN @NN n@ QQ mz... mz... @231.5

Oct. 20, 1959 l R. w. Hu'r'roN Er'AL 2,909,611

MULTI-GROUP DIRECT-ACCESS CROSSBAR TELEPHONE SWITCHING SYSTEM Filed June 5.' 1953 l 29 Sheets-Sheet 10 Lof THOUSANDS SELECTOR HOO l FIG. 3

Oct. 20, 1959 R. w. H'uTToN Erm. 2,909,611

MULTI-GROUP DIRECT-ACCESS cRossBAR TELEPHONE swITcHING SYSTEM Fileduune 5. 1953 l 29 Sheets-Sheet 11 yOct. 20, 1959 R. w. HuTToN ETAL 2,909,511

MULTI-GROUP DIRECT-ACCESS cRossBAR TELEPHONE swrTcHING SYSTEM Filed June 5. 195:5 .29 sheets-sheet 12 Oct. 20, 1959 R.w. Hu'rToN ErAL 2,909,611

MULTI-GROUP DIRECT-ACCESS CROSSBAR TELEPHONE SWITCHING SYSTEM 29 sneets-sneet 1s Filed June 5. 1953 IIAII'] wm Gc't; 20, 1959 R.lw. HUTToN ET'AL MULTI-GROUP DIRECT-ACCESS cRossBAR TELEPHONE swITcHING SYSTEM 29 Sheets-Sheet 14 Filed June 5.- 1953 R. w. HuTToN Erm. 2,909,611

29 Sheets-Sheet 15 Oct. 20, 1959 MULTI-GROUP DIRECT-ACCESS CROSSBAR TELEPHONE SWITCHING SYSTEM Filed June 5, 1953 :Tl "IL-;

R w Hu'r'roN ErAL MULTI-GROUP DIRECT-ACCESS ca ossBAR TELEPHONE swncHiNG SYSTEM Filed June 5. 1953 Oct. 20, 1959 Row..

N EE di Oct. 20, 1959 R.'w. HuT'roN Erm. 2,909,611

MULTI-GROUP DIRECT-ACCESS cRossBAR TELEPHONE swITcHING SYSTEM Filed June 5. 1953 29 Sheets-Sheet 17 FIG. 9

oct.' 2o, 1959 R. w. HUTTON m11 2,909,611

MULTI-GROUP DIRECT-ACCESS CROSSBR TELEPHONE SWITCHING SYSTEM Filed June 5.` 1953 29 Sheets-Sheet 18 OOO. IOP-3m mz:

Oct. 20, 1959 R. w. HurroN r1=:r AL 2,909,511

MULTI-GROUP n1REcT-AccEss cRossBAR TELEPHONE swI'rcHING SYSTEM Filed June 5. 195:5 29 sheets-sheet 19 TO/F ROM LINE SWITCH AND CONTROLLER 2'9 sheets-sheet 2o Filed June 5, 1953 TO CONNECTOR v/ TO/ FROM SELECTOR SWITCH 

